The error https://aur.manjaro.org/packages-meta-ext-v1.json.gz: Unacceptable TLS certificate happened to me today 06-25-23 and I could fix it by running sudo pacman -S ca-certificates as you suggested.
After that incident, where that link comes from, I started using the scipt suggested earlier (link below) instead, and it works. Got informed by it the other day that Spotify needed to be updated so I ran:
pamac upgrade && pamac build $(check-aur.sh)
I only run pamac upgrade now. or sudo pacman -Syu unless informed by the script.
Pretty great and no more weird pamac errors.
Is using the search engine THAT hard? There are 39 topics about that problem. At least 2-3 of them give workaround. Including this one, with solution directly above your post.
Turn off aur updates in pamac, update from repos normally. Install yay. Use the linus-arhus shell script or just
yay -Quaq
To check for aur updates. If there are any, update with
No one will trust a random script posted by an unknown person on a discussion forum. It’s frustrating to reinstall the whole system and reconfigure it again, that’s why I only trust solutions in posts from official persons like @philm
I wouldn’t call @linux-aarhus random person but the good thing in linux and esp. shell scripting is that anyone can check the code… Check-aur.sh only automates yay -Quaq…which you could have known if you read the tutorial.
I would save you the next post and tell you this tutorial is only half the solution in your case, the other half is in other tutorial/how-tos. Or in my post above. Reading is your friend. Or Ubuntu or maybe Windows. That at least crashes without any explanation and there is nothing you can do except staring at the rolling circle, but you certainly don’t have to read much.